Question 1

Which group of algae is believed to be the closest ancestor of land plants?

Accepted Answer

Charophytes

Question 2

What is the primary function of sporopollenin in plant evolution?

Accepted Answer

It prevents desiccation of spores and zygotes, allowing survival on land.

Question 3

In the alternation of generations in plants, which two generations alternate?

Accepted Answer

Sporophyte and gametophyte

Question 4

If a gametophyte has 16 chromosomes, how many chromosomes are in the sporophyte?

Accepted Answer

32

Question 5

What is directly produced by meiosis in plants?

Accepted Answer

Spores

Question 6

Which of the following is a key adaptation that allowed plants to colonize land?

Accepted Answer

Presence of a cuticle to prevent water loss

Question 7

What is the function of apical meristems in plants?

Accepted Answer

They allow for growth in length at the tips of roots and shoots.

Question 8

Which plant group is characterized by a dominant gametophyte generation?

Accepted Answer

Mosses

Question 9

In mosses, what is produced in the antheridium?

Accepted Answer

Sperm

Question 10

Why are nonvascular plants, such as mosses, generally small and close to the ground?

Accepted Answer

They lack vascular tissue for efficient water and nutrient transport.

Question 11

Which of the following best describes the function of xylem in vascular plants?

Accepted Answer

Transports water and minerals from roots to shoots

Question 12

What is the main competitive advantage provided by lignified vascular tissue in plants?

Accepted Answer

It provides structural support, enabling plants to grow taller and access more sunlight.

Question 13

Which of the following is a function of roots in vascular plants?

Accepted Answer

Anchoring the plant and absorbing water and minerals

Question 14

In the life cycle of a fern, which generation is dominant and what is its ploidy?

Accepted Answer

Sporophyte, diploid

Question 15

Which adaptation helps plants prevent desiccation of their embryos?

Accepted Answer

Development of seeds

Question 16

Which of the following is true about the dispersal of spores in mosses?

Accepted Answer

Spores are dispersed by wind.

Question 17

Which of the following best explains why ferns require a moist environment for reproduction?

Accepted Answer

Their sperm are flagellated and must swim to reach the egg.

Question 18

Which of the following is NOT a function of leaves in vascular plants?

Accepted Answer

Anchoring the plant

Question 19

Which of the following is an example of a gymnosperm?

Accepted Answer

Pine tree

Question 20

Which of the following best describes the alternation of generations in plants?

Accepted Answer

A life cycle that alternates between multicellular haploid and multicellular diploid stages

Guided Study: Plant Diversity and Life Cycles

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